Metal-cutting mechanism.



G. W. WEISS.

.METAL CUTTING MEGHANISM. APPLICATION FILED 00T. 19, 1909.

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UDLUMUIA PLANOGRAPH c0wAsH1NGToN, 111C.

Patenta sept. 19,1911.

G. W. WEISS.

METAL CUTTING MEGITANISM.

` APPLICATION FILED 00T. 19, 1909. 1,003,557. Patented sept. 19,1911.

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. O EEW G. W. WEISS.

METAL CUTTING MBGHANISM. APPLICATION FILED 00T. 19, 1909.

1,003,557. n Patented Sept. 19, 1911.

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@Ww/LTT ATTORNEY,

GEORGE W. WEISS, OF BROOKLYN, NEW YORK.

METAL-CUTTING MECHANISM.

Specification of Letters Patent.

Patented Sept. 19, 1911.

Application filed October 19, 1909. Serial No. 523,538.

To all whom it may concern:

Be it known that I, GEORGE W. Weiss, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Metal-Cutting Mechanism,of which the following is a specification, reference being had thereinto the accompanying drawing.

This invention relates part-icularly to im plements employed for cuttingsheet metal, and has for its object to provide ahandoperated implementof this class possessing great cutting power and adaptable to performvarious operations in relation thereto.

To attain this end the invent-ion consists in a certain novelconstruction, combination and arrangement of parts hereinafter describedand pointed out in the claims, reference being had to the accompanyingdrawings, in which:

Figure 1 is a perspective view of a cutting implement embodying myinvention, Fig. 2 is a side elevation thereof, Fig. 3 is a plan view,Fig. 4 is a view in elevation of the sides of the device opposite tothat illustrated in Fig. 3, Fig. 5 is a cross-sectional View on the linea-a of Fig. 3.

Similar numerals of reference are used to indicate the same parts in allthe figures.

In the drawing, 1 designates a base piece or block preferablyrectangular in shape and provided with a socket 2, indicated by dottedlines in Figs. 2 and 4, for supporting the implement upon a standard 3or its equivalent; or the base piece or block may be clamped in a vise,the shoulders 40 thereof resting upon the top of the vise jaws, thusdispensing with the standard. When the standard is used the base pieceor block is fixedly connected thereto by means of set screw 50, whichwhen loosened, permits the removal of the implement from the standard.Attached to the base piece or block 1 is a fixed cutting jaw 4 having aremovable cutting piece 5, and a longitudinal rib 6 extendinglongitudinally of said jaw at the back thereof above the cutting piece5. The

fixed jaw 4 is offset, or secured to the basev piece 1, at one side, forthe purpose of leaving a free passage when operating longitudinally on along piece of metal, the passage permitting said metal to pass withoutstraining or bending it out of position.

Pivoted to the fixed jaw at 19 is an arm 8 having a transverse slot 9therein, through which extend a bolt 10, preferably provided'with athumb nut, screwed into said jaw. lower edge of the arm 8, and projectsinto the slot 9 to form a back-stop for the arm 8. A longitudinal slot11 is formed in the free end of the arm 8 through which extend anadjusting bolt 12, carried by a disk 13, upon which it is eccentricallylocated. A thumb nut threaded on said bolt 12 enables the latter to befixed in various posit-ions in the slot 11, and thus varies the leverageof said arm 8, as desired and in accordance with the work to be done.Furthermore, this slot enables the operating handle 16 to be placed inforward position as shown in Fig. 1, or in rearward position as in Fig.4.

A strap 14 surrounds the disk 13 and is integral with or secured to alateral projection 15 therefrom, to which the operating handle 16 isattached. A thumb screw 17, which may be arranged as shown, is used fortightening the strap 14 on the disk 13, thus enabling the handle to beadjusted to any position desired or most convenient for the operator toobtain the best results possible with the implement. The handle 16 ispreferably extensible as shown and is clamped after being adjusted bymeans of a set screw 43 threaded into a collar 44 surrounding saidhandle.

A movable cutting jaw 25 mounted on the pivot 19 which also forms apivot of the arm 8, is provided with a cutting piece 5 similar to thaton the xed jaw and a like rib 6 similarly situated. These ribs serve toprevent the metal curling up as it is being cut. Also mounted on thepivot 19, at one of its ends, is a lever 42 having a longitudinal slot2() near its other end through which passes a bolt 21 having a thumb nut22 threaded thereon. The inner extremity of said bolt 21 extends throughand is adapted to slide in a slot 23 formed in the disk 13. A thumbscrew 26 threaded into the movable jaw 25 extends through a slot 27 inthe lever 42 concentric with the axis of the vpivot 19, by means ofwhich lthe relative position of the removable jaw 25 and said arm 42 maybe changed. A stop screw 24 threaded into the under side of the lever 42forms an adjustable stop to limit the downward movement of said lever.Thread- A set screw 41 is screwed into the,

ed into the tail of the movable jaw 25, in rear of the pivot 19, is athumb screw 28 adapted to bear against the under side of the lever 42and assist the thumb screw 26 to hold said jaw and the lever 42 in fixedrelation, that is to say, to prevent the lever 42 slipping on the jawwhen pressure is brought to bear in the operation of the cutting. Thewidth of cut is regulated by a gage plate 29 attached to a rod 30adjustably held in a perforation in the movable jaw 25 and held in fixedposition by means of a thumb screw 31. A plate 32 is adjustably securedto the cutting edge of the movable jaw 25, but out of Contact therewith,by means of a bolt 33 for the purpose of preventing the metal being fedlaterally to the jaws from rising. When, however, the metal is fedlongitudinally to the jaw the plate 32 will be swung out of the way.

When desired or found necessary, a movable clamp-arm 35. will beattached to the standard 3 for the purpose of supporting a box or tray36 for the reception of small cuttings. A standard 37 carrying a rest 38may also be provided for supporting the metal fed to the jaws, saidstandard 37 be` ing connected by a stay rod 39 to the arm 35.

When constructed and arranged in accordance with the foregoingdescription, this cutting device will be foundv admirably adapted forthe uses and purposes for which it is intended. The operating handle maybe turned upon the disk 13 and clamped at any part by means of the strap14 and screw 17. Furthermore, an increase or decrease of leverage andlength of opening of the jaws may be obtained through the connectionbetween the slotted lever 42 and the disk 13 by moving the bolt 21 inthe slot 20 of the lever 42, and in the slot 23 in the disk 13.

It is to be understood that the invention is not limited to the exactmechanism specified and shown, as various modications may be madewithout departing from the spirit of the invention.

Having now fully described my invention, what I claim as new therein,and desire to secure by Letters Patent, is:

1. In a device of the character herein specified, the combination with afixed jaw and a movable jaw, of a compound lever comprising an actuatingmember, a member adjustably connected to the movable jaw, and anadjustable connection between said members.

2. In a device of the character described, the combination with a fixedjaw and a movable jaw, of a compound lever comprising an actuatingmember adjustably fulcrumed to a substantially fixed part, a memberadjust-ably connected to the movable aw, and an adjustable connectionbetween said members.

In a device of the character herein specified, a compound cutting memberin which is comprised a movablej aw, an actuating part, means forvariably adjusting said actuating part with relation to the movable jaw,and an adjustable stop carried by the cutting member.

4. In a device of the character herein specified, a fixed jaw, acompound cutting member comprising a movable jaw, a slotted lever, andanadjustable stud on the movable jaw passing through the slot in saidlever adapted and arranged to vary the relations of said lever and jawwhereby the leverage is increased or decreased.

5. In a device of the character herein specified a fixed jaw and amovable jaw, an actuating lever, a slotted disk eccentrically pivoted tothe fixed jaw and having a binding strap to which the actuating handleis secured, means for rotatably adjusting said strap around said disk,said handle having an extensible member attached thereto.

6. In a device of the character herein specified, the combination withthe movable jaw, of a manipulating lever therefor and means foradjusting said lever about its fulcrum, independent-ly of said aw,whereby it may be operated either in front of or behind said fulcrum.

7. In a device of the character herein specified, the combination withthe movable jaw of a manipulating lever, a slotted bar connecteddirectly and adjustably to said jaw, and adjustable connecting meansbetween said manipulating lever and the slotted bar.

8. In a device of the character herein specified, the combination with afixed jaw and a movable aw, of a manipulating lever fulcrumed on thefixed jaw, and a sliding connection between said lever and the movablejaw.

9. In a device of the character herein specified, a rib projectinglaterally from the cutting face of each cutting jaw back from thecutting edge and projecting beyond the same and over the cutting edge ofthe o posite jaw for preventing severed metal rom curling up orspreading apart.

10. In `a device of the character herein specified, a rib projectinflFVlaterally from the cutting face of the movable cutting jaw andprojecting over the cutting edge of the xed jaw for the preventing oft-he rising or spreading apart of the metal being cut.

11. In a device of the character herein specified; a fixed jaw, amovable jaw, a compound member in .which is comprised a cutting part, anactuating part, and an adjustable gage supported and carried by thecutting member of the movable aw.

12. In a device of the character herein specified, the combination withthe support for the cutting mechanism of a support for the metal beingcut, vertically adjustable CII with relation to the cutting jaws, andconthrough a slot in said lever to permit of nected With the main frameof the cutting vertical adjustment of the lever. 10

mechanism by a laterally adjustable rod.

13. In a device of the character herein specified, the combination Witha fixed jaw,

In testimony whereof I hereto affix my signature in presence of tWoWitnesses.

GEORGE W. WEISS.

a movable jaw, a slotted fulcrum lever pivot- Witnesses: ed to the fixedjaw, and a clamping screw C. W. COUMBE, threaded in the fixed jaw andextending M. J. GORDON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

